Question 1

A 200-turn coil rotates in a magnetic field of magnitude 0.25 T at a frequency of 60 Hz. The area of the coil is 5.0 cm2. What is the maximum EMF in the coil?

Accepted Answer

A)  1.5 V 
B)  4.5 V 
C)  9.0 V 
D)  9.4 V 
E)  24 V 
A)  1.5 V 
B)  4.5 V 
C)  9.0 V 
D)  9.4 V 
E)  24 V D

Question 2

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50-$\Omega$resistor. The current in this circuit after a long time has passed will be

Accepted Answer

A)  0 
B)  8.83 A 
C)  15.4 A 
D)  21.2 A 
E)  some value that cannot be determined from the given information. 
A)  0 
B)  8.83 A 
C)  15.4 A 
D)  21.2 A 
E)  some value that cannot be determined from the given information. A

Question 3

At what frequency would the reactance of a 100-pF capactor be 1000 $\Omega$?

Accepted Answer

A)  3.18 MHz 
B)  15.9 MHz 
C)  1.59 MHz 
D)  3.98 MHz 
E)  2.54 Mhz 
A)  3.18 MHz 
B)  15.9 MHz 
C)  1.59 MHz 
D)  3.98 MHz 
E)  2.54 Mhz C

Question 4

The 8000-turn primary of a transformer is connected to a 50-kV transmission line and the secondary has 19 turns. What is the voltage output of this transformer?

Accepted Answer

A)  21 MV 
B)  119 V 
C)  110 V 
D)  21 kV 
E)  220 V 
A)  21 MV 
B)  119 V 
C)  110 V 
D)  21 kV 
E)  220 V

Question 5

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 $\mu$F, and R = 10 $\Omega$. Under steady-state conditions, the rms potential difference across the inductor will be

Accepted Answer

A)  5.13 V 
B)  13.7 V 
C)  21.9 V 
D)  32.3 V 
E)  47.2 V 
A)  5.13 V 
B)  13.7 V 
C)  21.9 V 
D)  32.3 V 
E)  47.2 V

Question 6

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 $\mu$F, and R = 10  $\Omega$. Under steady-state conditions, the rms potential difference across the capacitor will be

Accepted Answer

A)  9.73 V 
B)  12.2 V 
C)  18.4 V 
D)  25.5 V 
E)  36.6 V 
A)  9.73 V 
B)  12.2 V 
C)  18.4 V 
D)  25.5 V 
E)  36.6 V

Question 7

A simple generator consists of a single rectangular loop of wire rotating between two magnetic pole fACes as shown. Which curve in the graph correctly represents the EMF $\epsilon$ as a function of the angle between the normal to the plane of the coil and the direction of the magnetic field?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  None of these is correct. 
A)  1 
B)  2 
C)  3 
D)  4 
E)  None of these is correct.

Question 8

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50-$\Omega$resistor. The initial current in the circuit will be

Accepted Answer

A)  0 
B)  0.600 A 
C)  2.00 A 
D)  5.00 A 
E)  some value that cannot be determined from the given information. 
A)  0 
B)  0.600 A 
C)  2.00 A 
D)  5.00 A 
E)  some value that cannot be determined from the given information.

Question 9

If you double the frequency in the circuit shown, the inductance of the inductor

Accepted Answer

A)  increases by a factor of 2 
B)  does not change 
C)  decreases by a factor of 2 
D)  increases by a factor of 4 
E)  decreases by a factor of 4 
A)  increases by a factor of 2 
B)  does not change 
C)  decreases by a factor of 2 
D)  increases by a factor of 4 
E)  decreases by a factor of 4

Question 10

A capacitor is placed across an AC generator that has a maximum EMF of 170 V. For a frequency of 3000 Hz, the maximum current through the capacitor is 12 A. Find the value of the capacitor.

Accepted Answer

A)  2.4 * 10-5 F 
B)  2.6 *10-6 F 
C)  1.8 * 10-5 F 
D)  3.7 * 10-6 F 
E)  5.6* 10-6 F 
A)  2.4 * 10-5 F 
B)  2.6 *10-6 F 
C)  1.8 * 10-5 F 
D)  3.7 * 10-6 F 
E)  5.6* 10-6 F

Question 11

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 $\mu$F, and R = 10  $\Omega$. Under steady-state conditions, the rms potential difference across the resistor will be

Accepted Answer

A)  5.13 V 
B)  9.19 V 
C)  12.3 V 
D)  14.7 V 
E)  18.8 V 
A)  5.13 V 
B)  9.19 V 
C)  12.3 V 
D)  14.7 V 
E)  18.8 V

Question 12

Which of the following statements about a capacitor that is connected to an AC voltage is true?

Accepted Answer

A)  The average power dissipated by the capacitor is zero. 
B)  At low frequencies the capacitor behaves like an open circuit. 
C)  At high frequencies the capacitor behaves like a short circuit. 
D)  At any given instant the net charges on the capacitor is zero. 
E)  All the above statements are true. 
A)  The average power dissipated by the capacitor is zero. 
B)  At low frequencies the capacitor behaves like an open circuit. 
C)  At high frequencies the capacitor behaves like a short circuit. 
D)  At any given instant the net charges on the capacitor is zero. 
E)  All the above statements are true.

Question 13

A 15-$\Omega$ resistor is connected ACross a sinusoidal source that has a peak value of 75 V. The rms current drawn from this source is approximately

Accepted Answer

A)  5.0 A 
B)  0.20 A 
C)  7.1 A 
D)  3.5 A 
E)  0.28 A 
A)  5.0 A 
B)  0.20 A 
C)  7.1 A 
D)  3.5 A 
E)  0.28 A

Question 14

If you double the rms voltage in an AC circuit, the peak voltage

Accepted Answer

A)  increases by a fACtor of 2. 
B)  decreases by a fACtor of 2. 
C)  increases by a fACtor of   . 
D)  decreases by a fACtor of   . 
E)  does not change. 
A)  increases by a fACtor of 2. 
B)  decreases by a fACtor of 2. 
C)  increases by a fACtor of   . 
D)  decreases by a fACtor of   . 
E)  does not change.

Question 15

You connect a 100-$\Omega$ resistor, a 800-mH inductor, and a 10.0-$\mu$F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate rms current in your circuit is

Accepted Answer

A)  1.12 A 
B)  1.59 A 
C)  1.20 A 
D)  1.69 A 
E)  None of these is correct. 
A)  1.12 A 
B)  1.59 A 
C)  1.20 A 
D)  1.69 A 
E)  None of these is correct.

Question 16

The diagram that correctly represents the phase relationship between the voltage across the resistor and the voltage across the capacitor in a circuit containing an inductor L, a capacitor C, and a resistor R all connected in series is

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 17

The main power panel of a modern home is typically rated at 200 A at 120 V. The number of 60 W light bulbs that can be on at the same time is

Accepted Answer

A)  120 
B)  240 
C)  360 
D)  400 
E)  600 
A)  120 
B)  240 
C)  360 
D)  400 
E)  600

Question 18

The SI units of inductance times capacitance are

Accepted Answer

A)  seconds squared. 
B)  hertz. 
C)  volts. 
D)  amperes. 
E)  ohms. 
A)  seconds squared. 
B)  hertz. 
C)  volts. 
D)  amperes. 
E)  ohms.

Question 19

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 $\mu$F, and R = 10  $\Omega$. Under these conditions the current

Accepted Answer

A)  lags the voltage by 40º. 
B)  leads the voltage by 40º. 
C)  lags the voltage by 57.1º. 
D)  leads the voltage by 57.1º. 
E)  None of these are correct. 
A)  lags the voltage by 40º. 
B)  leads the voltage by 40º. 
C)  lags the voltage by 57.1º. 
D)  leads the voltage by 57.1º. 
E)  None of these are correct.

Question 20

You connect a 250- $\Omega$  resistor, a 1.20-mH inductor, and a 1.80-$\mu$F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate impedance of your circuit is

Accepted Answer

A)  1.49 k $\Omega$ 
B)  1.47 k $\Omega$ 
C)  0.452 $\Omega$ 
D)  250  $\Omega$ 
E)  None of these is correct. 
A)  1.49 k $\Omega$ 
B)  1.47 k $\Omega$ 
C)  0.452 $\Omega$ 
D)  250  $\Omega$ 
E)  None of these is correct.

A 200-turn coil rotates in a magnetic field of magnitude 0.25 T at a frequency of 60 Hz. The area of the coil is 5.0 cm². What is the maximum EMF in the coil?

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- $\Omega$ resistor. The current in this circuit after a long time has passed will be

At what frequency would the reactance of a 100-pF capactor be 1000 $\Omega$ ?

The 8000-turn primary of a transformer is connected to a 50-kV transmission line and the secondary has 19 turns. What is the voltage output of this transformer?

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the inductor will be

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the capacitor will be

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- $\Omega$ resistor. The initial current in the circuit will be

If you double the frequency in the circuit shown, the inductance of the inductor

A capacitor is placed across an AC generator that has a maximum EMF of 170 V. For a frequency of 3000 Hz, the maximum current through the capacitor is 12 A. Find the value of the capacitor.

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the resistor will be

Which of the following statements about a capacitor that is connected to an AC voltage is true?

A 15- $\Omega$ resistor is connected ACross a sinusoidal source that has a peak value of 75 V. The rms current drawn from this source is approximately

If you double the rms voltage in an AC circuit, the peak voltage

You connect a 100- $\Omega$ resistor, a 800-mH inductor, and a 10.0- $\mu$ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate rms current in your circuit is

The diagram that correctly represents the phase relationship between the voltage across the resistor and the voltage across the capacitor in a circuit containing an inductor L, a capacitor C, and a resistor R all connected in series is

The main power panel of a modern home is typically rated at 200 A at 120 V. The number of 60 W light bulbs that can be on at the same time is

The SI units of inductance times capacitance are

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under these conditions the current

You connect a 250- $\Omega$ resistor, a 1.20-mH inductor, and a 1.80- $\mu$ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate impedance of your circuit is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

Exam 9: Alternating-Current Circuits

A 200-turn coil rotates in a magnetic field of magnitude 0.25 T at a frequency of 60 Hz. The area of the coil is 5.0 cm2. What is the maximum EMF in the coil?

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- Ω\OmegaΩ resistor. The current in this circuit after a long time has passed will be

At what frequency would the reactance of a 100-pF capactor be 1000 Ω\OmegaΩ ?

The 8000-turn primary of a transformer is connected to a 50-kV transmission line and the secondary has 19 turns. What is the voltage output of this transformer?

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 μ\muμ F, and R = 10 Ω\OmegaΩ . Under steady-state conditions, the rms potential difference across the inductor will be

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 μ\muμ F, and R = 10 Ω\OmegaΩ . Under steady-state conditions, the rms potential difference across the capacitor will be

A simple generator consists of a single rectangular loop of wire rotating between two magnetic pole fACes as shown. Which curve in the graph correctly represents the EMF ϵ\epsilonϵ as a function of the angle between the normal to the plane of the coil and the direction of the magnetic field?

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- Ω\OmegaΩ resistor. The initial current in the circuit will be

If you double the frequency in the circuit shown, the inductance of the inductor

A capacitor is placed across an AC generator that has a maximum EMF of 170 V. For a frequency of 3000 Hz, the maximum current through the capacitor is 12 A. Find the value of the capacitor.

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 μ\muμ F, and R = 10 Ω\OmegaΩ . Under steady-state conditions, the rms potential difference across the resistor will be

Which of the following statements about a capacitor that is connected to an AC voltage is true?

A 15- Ω\OmegaΩ resistor is connected ACross a sinusoidal source that has a peak value of 75 V. The rms current drawn from this source is approximately

If you double the rms voltage in an AC circuit, the peak voltage

You connect a 100- Ω\OmegaΩ resistor, a 800-mH inductor, and a 10.0- μ\muμ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate rms current in your circuit is

The diagram that correctly represents the phase relationship between the voltage across the resistor and the voltage across the capacitor in a circuit containing an inductor L, a capacitor C, and a resistor R all connected in series is

The main power panel of a modern home is typically rated at 200 A at 120 V. The number of 60 W light bulbs that can be on at the same time is

The SI units of inductance times capacitance are

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are Vrms = 12 V, L = 5.0 mH, C = 4.0 μ\muμ F, and R = 10 Ω\OmegaΩ . Under these conditions the current

You connect a 250- Ω\OmegaΩ resistor, a 1.20-mH inductor, and a 1.80- μ\muμ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate impedance of your circuit is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

A 200-turn coil rotates in a magnetic field of magnitude 0.25 T at a frequency of 60 Hz. The area of the coil is 5.0 cm². What is the maximum EMF in the coil?

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- $\Omega$ resistor. The current in this circuit after a long time has passed will be

At what frequency would the reactance of a 100-pF capactor be 1000 $\Omega$ ?

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the inductor will be

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the capacitor will be

A 5-µF capacitor is charged to 30 V and is then connected in series with a 10-µH inductor and a 50- $\Omega$ resistor. The initial current in the circuit will be

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under steady-state conditions, the rms potential difference across the resistor will be

A 15- $\Omega$ resistor is connected ACross a sinusoidal source that has a peak value of 75 V. The rms current drawn from this source is approximately

You connect a 100- $\Omega$ resistor, a 800-mH inductor, and a 10.0- $\mu$ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate rms current in your circuit is

A series RLC circuit is driven by a 1.0-kHz oscillator. The circuit parameters are V_rms = 12 V, L = 5.0 mH, C = 4.0 $\mu$ F, and R = 10 $\Omega$ . Under these conditions the current

You connect a 250- $\Omega$ resistor, a 1.20-mH inductor, and a 1.80- $\mu$ F capacitor in series across a 60.0-Hz, 120-V (peak) source. The approximate impedance of your circuit is